Development of transient expression assay for Cannabis sativa which revealed differential Agrobacterium susceptibility among cannabis cultivars
Sorokin, A.; Yadav, N. S.; Gaudet, D.; Kovalchuk, I.
Show abstract
In plant biology, transient expression analysis plays a vital role to provide a fast method to study the gene of interest and subsequently leads the path to develop an improved crop variety with better agronomic traits. In this study, we have reported a rapid and efficient method for transient expression in Cannabis sativa seedlings using Agrobacterium tumefaciens-mediated transformation. A. tumefaciens strain EHA105 carrying the pCAMBIA1301 construct with uidA gene was used to transform cannabis seedlings and the GUS assay was used to detect the uidA expression. A 1% hydrogen peroxide (H2O2) solution was used for both seed sterilization and rapid germination steps. Transient transformation revealed that both cotyledons and young true leaves are amenable to transformation. Comparison to Nicotiana tabacum (tobacco) showed that cannabis seedlings were less susceptible to transformation with Agrobacterium tumefaciens. The susceptibility to Agrobacterium infection also varied with the different cannabis cultivars. The method established in this study has potential to be an important tool for gene-function studies and genetic improvement in cannabis.
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